When I purchased my Ergodox, I also discovered that I cross-type the letter Y, and my muscle memory would lead me to hit a layer key instead, in the default layout, which would cause a bunch of the letter keys to do different things. My solution was to reprogram the layer key to be a null key that doesn't do anything, so instead of "Y equals your keyboard is now broken" it was "Y means nothing happens". I kept it tha…
Of course, that was for prose. It took a month or so to arrive at a satisfactory layout for all the symbols, having suddenly dropped to 48 keys. Though thumbs are so useful! Using them only for spaces is criminal.
Still use a laptop on the couch at home for casual stuff. Still can't type properly on it.
Not much point to this comment, I guess, other than that I highly recommend anyone to borrow someone's plank/preonic/ergodox for a day or two if they'll let you, and bang out some prose. You might be very pleasantly surprised!